The 122-mm howitzer D-30 (GRAU index 2A18) is a Soviet howitzer that entered service in the late 1960s, replacing the M-30 122 mm howitzer. Its longer barrel gave it greater range than the M-30, and once emplaced it could be traversed 360 degrees. It is no longer in production, but remains in service with more than 60 countries' armed services.